Tool for wristwatch

ABSTRACT

Substantially cylindrical head tube body  1,  center tube body  2  and tip tube body  4  threadedly engaged each other to thereby construct tool main body  5  of tool for wristwatch  20.  Through hole  2   c  of the center tube body  2  is provided with partition part  2   e  having small-diameter hole  2   d  and slant face  2   f.  Hammering member  7  and compression spring  6  are slidably accommodated in the through hole  2   c.  Trigger shaft  8  includes small-diameter part  8   a,  which can be inserted in center hole  7   a  of the hammering member  7,  and large-diameter part  8   c  continuing therefrom through slant face  8   b,  which can pass through the small-diameter hole  2   d.  Deformed coil spring  9  has the large-diameter part  8   c  of the trigger shaft  8  fitted therein in wound form, and energizes the trigger shaft  8  toward sliding shaft  11  while slanting the trigger shaft  8  so as to cause the small-diameter part  8   a  to shift toward the inside wall of the tool main body  5.  The sliding shaft  11  at its rear end includes large-diameter head part  11   a  and at its front end includes engagement part  11   b  to which a wristwatch tool component can be replaceably fixed. The engagement part  11   b  interlocks small-diameter hole  4   c  of the tip tube body  4  with a play, and the front end of the engagement part  11   b  protrudes from the tip tube body  4.

TECHNICAL FIELD

[0001] The present invention relates to a tool for wristwatch forremoving a band connecting pin, a case back, etc. as exterior parts ofwristwatch.

BACKGROUND ART

[0002] Among the common wristwatch bands, there are those having aplurality of band pieces connected to each other by means of bandconnecting pins. In this common wristwatch bands, the number of bandpieces is regulated by removing or inserting band connecting pins, sothat the band length can be adjusted. These band connecting pins removedor inserted are called adjust pins. Further, the band connecting pinsare also used to connect a band center buckle. The band connecting pinsare buried in, for example, band pieces, so that a special purpose bandconnecting pin removing tool is needed for removing operation therefor.

[0003] As an example of conventional general band connecting pinremoving tools, is disclosed in, for example, Japanese Utility ModelRegistration No. 2522973. An outline thereof is as follows. A bandcradle having side wall portions at its two bottom ends is provided. Arotatable sliding shaft is disposed at one side wall portion of the bandcradle. A groove is formed on the other side wall portion of the axis ofsliding shaft. A tip pin is secured to the sliding shaft at an eccentricposition so as to be able to cope with the thickness of band mounted onthe band cradle. Each band connecting pin is pushed by means of the tippin so that the band connecting pin is pressed out toward the groove.The disclosed device can be applied to varied bands having slightlydifferent band connecting pin positions only by rotating the slidingshaft.

[0004] Furthermore, a special purpose tool is needed for opening a caseback of chamfer structure from a wristwatch case. Wrenches are commonlyused for the opening.

[0005] However, in the use of conventional band connecting pin removingtool, occasionally, pins cannot be removed without the application ofgreat force because of the crush of hole for insertion of a bandconnecting pin or the dislocation of position of hole between bandpieces. Therefore the tip pin would be bent or be broken. Further, humanpress force is limited, so that failure to remove band connecting pinshas been experienced when the band connecting pins are rusted or whendust or the like sticks to the holes for insertion of band connectingpins. With respect to the chamfered case back of wristwatch case aswell, failure to remove it by wrenching has been experienced when thechamfer portion has been deformed or rusted. At all events, largestrength and knack have been needed.

DISCLOSURE OF THE INVENTION

[0006] The present invention has been made with a view toward solvingthe above problems of the prior art. Accordingly, the object of thepresent invention is to provide a tool for wristwatch capable of easilyremoving a band connecting pin, a case back of wristwatch case or thelike, which could not be removed with the use of conventional wristwatchtools, with only application of the same given force as in the priorart.

[0007] According to one aspect of the present invention, there isprovided a tool for wristwatch, employed to remove a band connectingpin, a case back of wristwatch case or the like, said tool comprising:

[0008] a substantially cylindrical tool main body including, providedthereinside:

[0009] a sliding shaft having a front end adapted to permit replaceablesecuring of a wristwatch tool component, said sliding shaft having thefront end protruding from the tool main body; and

[0010] hammering means, said hammering means comprising:

[0011] a compression spring, and a hammering member adapted to beenergized and slide toward the sliding shaft by the compression spring,and

[0012] a trigger member capable of releasing spring force of thecompression spring when the compression spring has reached apredetermined compression level,

[0013] said sliding shaft and said hammering means so arranged thatinstantaneous large force is applied to the wristwatch tool component byhammering the rear end of the sliding shaft by means of the hammeringmeans.

[0014] The tool for wristwatch according to the present invention may becharacterized in that the tool main body comprises a head part tubebody, a center tube body threadedly engaged with the head part tubebody, and a tip tube body threadedly engaged with the center tube body,and

[0015] wherein inside of the center tube body, a partition part having ahole of small diameter is formed.

[0016] Also, the tool for wristwatch according to the present inventionmay be characterized in that at the side of the tip tube body of thepartition part, a slant face, which is extending from the hole of smalldiameter to an inside wall of the center tube body is formed.

[0017] Further, the tool for wristwatch according to the presentinvention may be characterized in that the hammering member is disposedon the head part tube body side of the partition part, the hammeringmember being provided with a center hole; and

[0018] wherein the trigger member is disposed on the tip tube body sideof the partition part, the trigger member comprising:

[0019] a trigger shaft having a part of small diameter and a part oflarge diameter, the small diameter part adapted to be inserted in thecenter hole of the hammering member, the large diameter part adapted topass through the small diameter hole of the partition part, the largediameter part brought into contact with the rear end of the slidingshaft, and

[0020] a deformed coil spring capable of energizing the trigger shafttoward the sliding shaft while slanting the trigger shaft,

[0021] the slanted trigger shaft arranged to compress the compressionspring through the hammering member by pressing of the front end of thesliding shaft,

[0022] the trigger shaft arranged to stand erect in the moment that thelarge diameter part of the trigger shaft is fitted in the small diameterhole.

[0023] Still further, the tool for wristwatch may be characterized inthat the compression spring is disposed in the center tube body and thehead part tube body, the spring force of the compression spring isadjustable by regulating a length of threaded engagement of the centertube body with the head tube body.

[0024] Still further, the tool for wristwatch according to the presentinvention may be characterized in that further comprising pliers havinga one-side functioning part and an other-side functioning part, wherein:

[0025] a head part of the tool for wristwatch engages with the inside ofthe one-side functioning part of the pliers, and

[0026] the tool main body or the sliding shaft are arranged so as topass through a through hole of the other-side functioning part of thepliers,

[0027] the tool for wristwatch further comprising a spring capable ofenergizing the tool main body toward the one-side functioning part and ajig for fixing a wristwatch exterior part arranged outside theother-side functioning part.

[0028] Still further, the tool for wristwatch according to the presentinvention may be characterized in that the securing of the wristwatchtool component to the front end of the sliding shaft is accomplished byat least one of insertion of a shaft in a shaft hole under pressure,screwing of a shaft in a shaft hole with setscrew hole, engagement of anexternal thread with an internal thread, interlock of a protrudent partwith a recessed part and interlock of a taper shaft with a bearing.

[0029] Still further, the tool for wristwatch according to the presentinvention may be characterized in that at the front end portion of thesliding shaft, an interlock groove for securing the wristwatch toolcomponent is formed,

[0030] at the center of the wristwatch tool component, a lock hole isformed and inside of the lock hole, a recessed groove is formed, and ano-ring member consisting of en elastic member is fitted in the recessedgroove,

[0031] the O-ring member arranged so as to be fitted in the interlockgroove of the sliding shaft, thereby enabling detachably securing thewristwatch tool component to the front end portion of the sliding shaft.

[0032] Still further, the tool for wristwatch according to the presentinvention may be characterized in that the base end portion of thewristwatch tool component is provided with an abutment member consistingof a flexible member.

[0033] Still further, the tool for wristwatch according to the presentinvention may be characterized in that a pin or deformed pin forremoving a band connecting pin as the wristwatch tool component isdetachably secured.

[0034] Still further, the tool for wristwatch according to the presentinvention may be characterized in that the pin for removing a bandconnecting pin is constituted of a superelastic metallic materialconsisting of an alloy which contains nickel/titanium (Ni—Ti) ornickel/titanium/cobalt (Ni—Ti—Co) as a principal component.

[0035] Still further, the tool for wristwatch according to the presentinvention may be characterized in that the pin for removing a bandconnecting pin is a push pin at its front end provided with a recessedpart of cone shape.

[0036] Still further, the tool for wristwatch according to the presentinvention may be characterized in that the pin for removing a bandconnecting pin is a push pin at its front end provided with a recessedpart consisting of a blind hole adapted to have the connecting pinfitted therein.

[0037] Still further, the tool for wristwatch according to the presentinvention may be characterized in that a wrench for removing a bezel ora case back as the wristwatch tool component is detachably secured.

[0038] Still further the tool for wristwatch according to the presentinvention may be characterized in that the hammering member is disposedon the head part tube body side of the partition part, the hammeringmember being provided with a center hole, and wherein the trigger membercomprises:

[0039] a trigger shaft being disposed under the partition part of thecenter tube body, the trigger shaft at its upper end being provided withan abutment surface of slanted cone shape, the trigger shaft beingprovided with a vertical through hole,

[0040] an upper part of the sliding shaft, the upper part adapted topass through the through hole of the trigger shaft and adapted to befitted in the center hole of the hammering member, and

[0041] the hammering member having its upper end portion formed intosubstantially a dome configuration,

[0042] the tool for wristwatch is so arranged that the hammering memberis energized downward by the compression spring, whereby the lower endof the hammering member is abutted to the abutment surface of slantedcone shape of the upper end of the trigger shaft, resulting that anaxial center of the hammering member is based,

[0043] the tool for wristwatch is so arranged that the upper part of thesliding shaft raises the hammering member by pressing of the front endof the sliding shaft, whereby the compression spring is compressed bythe hammering member having been biased toward the inside wall, and

[0044] the upper end portion of substantially dome configuration of theraised hammering member is guided by the inside wall of the through holeof the center, tube body, whereby the axial center of the hammeringmember is moved toward the center, with the result that the hammeringmember stands erect.

[0045] Still further, the tool for wristwatch according to the presentinvention may be characterized in that the hammering member is raised inaccordance with rise of the sliding shaft so that a slant face providedon a large diameter part of the lower end portion of the hammeringmember is guided by the slant face part of the partition part, wherebythe axial center of the hammering member is gradually departed from theinner wall and shifts toward center so that the hammering member isthrust upward.

[0046] Still further, the tool for wristwatch according to the presentinvention may be characterized in that a compression coil spring isinterposed between a lower end of the trigger shaft and the slidingshaft,

[0047] the tool for wristwatch is so arranged that the trigger shaft isenergized upward by spring force of the compression coil spring, wherebythe abutment surface of slanted cone shape of the upper end of thetrigger shaft is abutted to the large diameter part of the lower endportion of the hammering member,

[0048] the tool for wristwatch is so arranged that the sliding shaft isenergized downward by the spring force of the compression coil spring,whereby the front end of the sliding shaft protrudes from the tip tubebody.

[0049] According to the present invention, there is provided a tool forwristwatch, employed to remove a connecting pin from a band connectingpin insertion hole of watchband, said tool comprising:

[0050] a substantially cylindrical upper tube body having an insidethreaded part provided on an inside wall of lower end portion thereofand having an outside threaded part provided on an outside wall thereof,

[0051] a removing pin detachably and threadedly engaging the insidethreaded part of the upper tube body, and

[0052] a substantially cylindrical lower tube body of taper outlinebeing detachably fitted to a lower portion of the upper tube body bythreadedly engaging an inside threaded part provided on an innerperiphery of the lower tube body with the outside threaded part of theupper tube body,

[0053] the tool for wristwatch is so arranged that a length ofprotrusion of a front end portion of the removing pin from a throughhole of front end of the lower tube body can be adjusted by regulating acondition of threaded engagement of the inside threaded part provided onthe inner periphery of upper end portion of the lower tube body with theoutside threaded part of the upper tube body.

[0054] According to the present invention, further, there is provided atool for wristwatch, employed to remove a connecting pin in the eventthat a connecting pin is not completely drawn off from a band connectingpin insertion hole of watchband, after the connecting pin is removedfrom the band connecting pin insertion hole by using the tool forwristwatch claimed in any of claims 1 to 13, 15 and 17 to 18, said toolcomprising:

[0055] a substantially cylindrical upper tube body having an insidethreaded part provided on an inside wall of lower end portion thereofand having an outside threaded part provided on an outside wall thereof,

[0056] a removing pin being detachably and threadedly engaged with theinside threaded part of the upper tube body, and

[0057] a substantially cylindrical lower tube body of taper outlinebeing detachably fitted to a lower portion of the upper tube body bythreadedly engaging an inside threaded part provided on an innerperiphery of the lower tube body with the outside threaded part of theupper tube body,

[0058] the tool for wristwatch is so arranged that a length ofprotrusion of a front end portion of the removing pin from a throughhole of front end of the lower tube body can be adjusted by regulating acondition of threaded engagement of the inside threaded part provided onthe inner periphery of upper end portion of the lower tube body with theoutside threaded part of the upper tube body.

[0059] The tool for wristwatch according to the present invention may becharacterized that at the front end of the lower tube body, an abutmentmember consisting of a flexible member is disposed.

[0060] Also, the tool for wristwatch according to the present inventionmay be characterized in that the removing pin is constituted of asuper-elastic metallic material consisting of an alloy which containsnickel/titanium (Ni—Ti) or nickel/titanium/cobalt (Ni—Ti—Co) as aprincipal component.

[0061] According to still a further aspect of the present invention,there is provided a hold guide member of substantially clipconfiguration, comprising a pair of clip hold members and a connectingpart adapted to couple the clip hold members at base end portionsthereof in curved form to thereby impart elasticity,

[0062] the hold guide member so constructed that a watchband can befixed by interposing the watchband between the clip hold members.

[0063] The hold guide member according to still a further aspect of thepresent invention may be characterized in that the connecting part isprovided with a pin catcher part consisting of a recessed part ofthrough hole configuration adapted to hold a connecting pin so as toprevent dropping of the connecting pin.

[0064] According to still a further aspect of the present invention,there is provided a wristwatch tool set of substantially boxconfiguration, comprising:

[0065] an underlying box main body,

[0066] a cover member openably secured to one side of the box main body,and

[0067] an accommodation member fitted in a box part of the box mainbody,

[0068] said accommodation member on its upper surface side providedwith:

[0069] a recessed part for accommodation for accommod ating the tool forwristwatch,

[0070] a recessed part for accommodation for accommodating thewristwatch tool component defined, and

[0071] a recessed part for accommodation for accommodating the holdguide member.

[0072] The wristwatch tool set according to the present invention may becharacterized in that the accommodation member on its upper surface sideis further provided with a recessed part for accommodation foraccommodating the tool for wristwatch.

BRIEF DESCRIPTION OF THE DRAWING

[0073]FIG. 1 is an exploded sectional view of a tool for removing a bandconnecting pin, which is a first form of tool for wristwatch accordingto the present invention.

[0074]FIG. 2 is a sectional view of the above tool for wristwatch afterassembly.

[0075]FIG. 3 is a sectional view explaining an operating condition ofthe above tool for wristwatch.

[0076]FIG. 4 is a sectional view explaining another operating conditionof the above tool for wristwatch.

[0077]FIG. 5 is a sectional view explaining a further operatingcondition of the above tool for wristwatch.

[0078]FIG. 6 is a partial sectional side view of a tool for removing aband connecting pin, which is a tool for wristwatch according to asecond embodiment of the present invention.

[0079]FIG. 7 is a plan view of a tool component for opening a wristwatchcase back or bezel according to a third embodiment of the presentinvention.

[0080]FIG. 8 is a view of a section on the line A-A of FIG. 7.

[0081]FIG. 9 is a plan view of a tool for opening a case back or bezel,which is fixed to a sliding shaft.

[0082]FIG. 10 is a front view of a tool for removing a band connectingpin, which is a fourth form of tool for wristwatch according to thepresent invention.

[0083]FIG. 11 is an exploded sectional view of the tool for wristwatchshown in FIG. 10.

[0084]FIG. 12 is a sectional view explaining an operating condition ofthe above tool for wristwatch.

[0085]FIG. 13 is a sectional view explaining another operating conditionof the above tool for wristwatch.

[0086]FIG. 14 is a sectional view explaining a further operatingcondition of the above tool for wristwatch.

[0087]FIG. 15 is a partial enlarged sectional view explaining the mannerof removing or fitting of a removing pin detachably fitted to the toolfor wristwatch shown in FIG. 10.

[0088]FIG. 16 is a partial enlarged sectional view of a push pindetachably fitted to the tool for wristwatch shown in FIG. 10.

[0089]FIG. 17 is a partial enlarged sectional view of a push pindetachably fitted to the tool for wristwatch shown in FIG. 10.

[0090]FIG. 18 is a front view of an auxiliary tool for removing a bandconnecting pin, which is a fifth form of tool for wristwatch accordingto the present invention.

[0091]FIG. 19 is an exploded sectional view of the tool for wristwatchshown in FIG. 18.

[0092]FIG. 20 is a sectional view explaining an operating condition ofthe above tool for wristwatch.

[0093]FIG. 21 is a sectional view explaining another operating conditionof the above tool for wristwatch.

[0094]FIG. 22 is a top view of a wristwatch tool set for accommodatingthe tool for wristwatch according to the present invention.

[0095]FIG. 23(A) is a perspective view of a hold guide member includedin the wristwatch tool set of FIG. 22; and FIG. 23(B) is a top schematicview showing one manner of use of the hold guide member.

[0096]FIG. 24 is a perspective view showing one manner of operation forremoving a connecting pin from a watchband connecting pin insertion holewith the use of the tool for wristwatch and hold guide member of FIG.22.

BEST MODE FOR CARRYING OUT THE INVENTION

[0097] Embodiments (Examples) of the present invention will be describedin detail below with reference to the appended drawings.

[0098] The first embodiment of the present invention will now bedescribed with reference to drawings

[0099]FIG. 1 is an exploded sectional view of a tool for removing a bandconnecting pin, which is a first form of tool for wristwatch accordingto the present invention. FIG. 2 is a sectional view of the above toolfor wristwatch after assembly. FIGS. 3 to 5 are sectional viewsexplaining operating conditions of the above tool for wristwatch.

[0100] The construction of the first form of tool for wristwatchaccording to the present invention will now be described. Referring toFIG. 1, numeral 20 generally denotes one form of tool for wristwatchaccording to the present invention.

[0101] As shown in FIG. 1, the tool for wristwatch 20 at its upper endportion includes substantially cylindrical head part tube body 1 havingits one end closed. The inner wall of the head part tube body 1 isprovided with inside threaded part 1 a. Moreover, at the lower part ofthis head part tube body 1, substantially cylindrical center tube body 2is coupled with this head part tube body 1 by engaging the outsidethreaded part 2 a, which is provided on an outer periphery of upper endportion of the center tube body 2, with the inside threaded part 1 a ofthe head part tube body 1.

[0102] Furthermore, at the lower end portion of the center tube body 2,inside threaded part 2 b is formed and this inside threaded part 2 b isadapted to engage outside threaded part 4 a provided on an outerperiphery of tip tube body 4 as described later. Further, at the centertube body 2, a through hole 2 c is formed. At the lower portion of thisthrough hole 2 c, a partition part 2 e is formed and this partition part2 e is provided with small-diameter hole 2 d whose diameter is smallerthan that of the through hole 2 c. This partition part 2 e is providedwith slant face part 2 f extending from the small-diameter hole 2 d ofthe partition part 2 e to the inner wall provided with the insidethreaded part 2 b.

[0103] Holding tube body 3 is constructed by threadedly engaging thehead part tube body 1 and the center tube body 2. The holding tube body3 is preferably coated with a resin so as to facilitate holding thereof.

[0104] At the lower portion of the holding tube body 3, namely, at thelower portion of the center tube body 2, substantially cylindrical tiptube body 4 having tapered outline is secured by engaging the outsidethreaded part 4 a provided on an outer periphery of upper end portion ofthe tip tube body 4 with the inside threaded part 2 b provided at thelower end portion of the center tube body 2.

[0105] In addition, at the center of the tip tube body 4, a through hole4 b is formed and this through hole 4 b is so formed that it iscontinuous to small-diameter hole 4 c formed at the lower end side,namely, tip end side of the tip tube body 4.

[0106] Substantially cylindrical tool main body 5 of the tool forwristwatch 20 is constructed by threaded interlock of the holding tubebody 3, which consists of the head part tube body 1 and the center tubebody 2, with the tip tube body 4.

[0107] Further, as shown in FIGS. 1 and 2, in the holding tube body 3,namely, in the through hole 2 c of the center tube body 2, a compressionspring 6 consisting of a compression coil spring and cylindricalhammering member 7 are slidably accommodated between the head part tubebody 1 and the partition part 2 e of the center tube body 2 in such acondition that the hammering member 7 is energized downward by thespring force of the compression spring 6. In this condition, the outsidediameter of the hammering member 7 is larger than the inside diameter ofthe partition part 2 e of the center tube body 2, so that the hammeringmember 7 is locked by the partition part 2 e of the center tube body 2.

[0108] This hammering member 7 is substantially in the form of cylinderhaving a bottom, and at the center thereof, a center hole 7 a which is anon-through hole is formed. As described later, small-diameter part 8 aprovided at an upper end portion of trigger shaft 8 can be inserted inthe center hole 7 a.

[0109] Still further, as shown in FIGS. 1 and 2, between the center tubebody 2 and the tip tube body 4, namely, inside the through hole 4 b ofthe tip tube body 4, a trigger member 10, which is constructed byassembling a trigger shaft 8 and a deformed coil spring 9, and a slidingshaft 11 are accommodated.

[0110] That is to say, a small-diameter part 8 a, which can be insertedin the center hole 7 a of the hammering member 7 with a sufficientclearance, is formed at the upper end portion of the trigger shaft 8.This small-diameter part 8 a is so formed as to continue to alarge-diameter part 8 c through slant face 8 b. Further, at the lowerend side of the large-diameter part 8 c, a collar part 8 d is formed.This large-diameter part 8 c is so constructed as to be insertable inthe small-diameter hole 2 d of the center tube body 2.

[0111] On the other hand, with respect to the deformed coil spring 9, asshown in FIGS. 1 and 2, some turns of the spring member coils at lowerend 9 a thereof have inside diameters which are smaller than thediameter of the large-diameter part 8 c of the trigger shaft 8.Moreover, the center axis of the deformed coil spring 9 is largelycurved (biased) at the lower end 9 a thereof. The deformed (oil spring 9is inserted into the large-diameter part 8 c of the trigger shaft 8 fromthe lower end 9 a of the deformed coil spring 9 so that it is woundaround the large-diameter part 8 c to be incorporated with the collarpart 8 d.

[0112] At the upper end of the sliding shaft 11 a large-diameter headpart 11 a is formed. Further, at the lower end (tip) portion of thesliding shaft 11, a small-diameter engagement part 11 b, to whichwristwatch tool components can be replaceably, is formed.

[0113] The trigger member 10, which is constructed by assembling thetrigger shaft 8 and the deformed coil spring 9, and the sliding shaft 11are accommodated in the inside wall of the tip tube body 4, namely, inthe through hole 4 b of the tip tube body 4 in such a condition that asufficient clearance is provided therebetween.

[0114] That is to say, the sliding shaft 11 is mounted in such acondition that the small-diameter engagement part 11 b thereof passesthrough the small-diameter hole 4 c of the tip tube body 4 and protrudestherefrom in the loosely fitting. However, the head part 11 a of thesliding shaft 11 has a diameter larger than that of the small-diameterhole 4 c of the tip tube body 4 so that the-sliding shaft 11 may notfall out from the small-diameter hole 4 c of the tip tube body 4.

[0115] In this condition, the trigger member 10 is disposed in the spacebetween the head part 11 a of the sliding shaft 11 and the partitionpart 2 e of the center tube body 2 and is arranged in such a conditionthat the lower end of the trigger shaft 8 of the trigger member 10 abutsto the head part 11 a of the sliding shaft 11 and the upper end of thedeformed coil spring 9 abuts to the partition part 2 e of the centertube body 2.

[0116] As a result, as shown in FIG. 2, the trigger shaft 8 is energizedtoward the sliding shaft 11 in a manner such that the small-diameterpart 8 a of the upper end portion of the trigger shaft 8 shifts towardthe inside wall of the tool main body 5, namely, the trigger shaft 8slants by virtue of the spring force of the deformed coil spring 9 andby virtue of the marked curving (biasing) at lower end 9 a of the centeraxis of the deformed coil spring 9.

[0117] Moreover, a removing pin 12, which is a tool for removing a bandconnecting pin, is fixed to the engagement part 11 b of the slidingshaft 11 by inserting the engagement part 11 b into a lock hole 12 aunder pressure. The removing pin 12 has a straight pin part 12 c whichcan be inserted in a band connecting pin insertion hole of watchband.

[0118] In this case, the material for the straight part 12 c of thisremoving pin 12 is not particularly limited, and as for this material,common tool steels such as carbon tool steels (SK2M, SK3M, SK4M, SK5Mand SK6M defined in Japanese Industrial Standard (JIS)) and alloy toolsteels (SKS2M, SKS5M, SKS51M and SKS7M defined in Japanese IndustrialStandard (JIS)) having been subjected to heat treatment can be used. Inaddition, the straight part 12 c is preferably such that it can beeasily restored to the original form without suffering bending orbreakage in the operation for removing or adjusting a band connectingpin of watchband. Therefore, it is preferred that the material for thestraight part 12 c of the removing pin 12 consist of a super-elasticmaterial. Such a super-elastic material is preferably a super-elasticmetallic material consisting of an alloy which contains nickel/titanium(Ni—Ti) or nickel/titanium/cobalt (Ni—Ti—Co) as a principal component.

[0119] For example, the material for the straight part 12 c can be atleast one alloy selected from the group consisting of Ni—Ti, Ni—Ti—Cu,Ni—Ti—Fe, Ni—Ti—Nb, Ni—Ti—Zr, Ni—Ti—Hf, Cu—Zn, Cu—Zn—Al, Cu—Zn—Si,Cu—Au—Zn, Cu—Al, Cu—Al—Ni, Fe—Ni—Al, Fe—Ni—Al—Ti, Fe—Ni—Co—Ti, Fe—Mn—Si,Ag—Cd, Au—Cd, Cu—Sn, Cu—Au—Zn, Cu—Zn—Be, Cu—Zn, Ni—Al andFe—Mn—Si—Cr—Ni.

[0120] More specifically, as the material for the straight part 12 c,for example, Ni—Ti composed of 50% by weight of Ni and 50% by weight ofTi, or Ni—Ti composed of 40% by weight of Ni and 60% by weight of Ti canbe used. In particular, these super-elastic metallic materials aresuitable for use in removing pin 12 whose straight part 12 c is long.

[0121] Now, the operation of the thus constructed wristwatch tool 20according to the first embodiment will be described with reference toFIGS. 2 to 5.

[0122] Firstly, the center position of the wristwatch tool 20 in thestate of FIG. 2 is aligned with the axial center of a wristwatch bandconnecting pin, not shown, by holding the head part tube body 1 thereofby hand.

[0123] Then, as shown in FIG. 3, the tool for wristwatch 20 is pressedin the arrow direction. Consequently, the sliding shaft 11 rises,resisting against the spring force of the deformed coil spring 9.Thus,the head part 11 a of the sliding shaft 11 thrusts the triggermember 10 upward. However, the deformed coil spring 9 is stopped andcompressed by the partition part 2 e.

[0124] On the other hand, the upper end of the small-diameter part 8 aof the trigger shaft 8, while keeping contact with the slant face 2 f ofthe center tube body 2, passes through the small-diameter hole 2 d andthrusts the hammering member 7 upward. As a result, the compressionspring 6 is compressed by the hammering member 7 so that the hammeringmember 7 is pushed back with large force by the compression spring 6.

[0125] When the tool main body 5 of the tool for wristwatch 20 isfurther pressed in the arrow direction, the slant face part 8 b of thetrigger shaft 8 is finally engaged with the slant face 2 f of the centertube body 2.

[0126] When the tool main body 5 is still further pressed, the slantface 8 b of the trigger shaft 8 is guided by the slant face 2 f of thepartition part 2 e by the interaction between the slant face 8 b of thetrigger shaft 8 and the slant face 2 f of the partition part 2 e. As aresult, the trigger shaft 8 stands erect so that the small-diameter part8 a is shifted to the center of the center tube body 2 (see FIG. 3).

[0127] When the upper end of the small-diameter part 8 a of the triggershaft 8 slides on the lower end surface of the hammering member 7 andthe sliding shaft 11 is slid in a predetermined stroke, the compressionspring 6 reaches a predetermined compression level. As a result, asshown in FIG. 4, the axial center of the trigger shaft 8 issubstantially aligned with the axial center of the tool main body 5. Atthis stage, the trigger actuation of the trigger member 10 is initiated.

[0128] That is, at this stage, the small-diameter part 8 a and thecenter hole 7 a of the hammering member 7 align with each othersimultaneously with the initiation of fitting of the large-diameter part8 c into the small-diameter hole 2 d. At that moment, the spring forceof the compression spring 6 is suddenly released, so that thesmall-diameter part 8 a of the trigger shaft 8 is instantaneously fittedin the center hole 7 a of the strongly pressed hammering member 7. Thus,as shown in FIG. 5, strong impact (hammering force) is exerted on thesliding shaft 11 which is in contact with the trigger shaft 8. In thisconnection, the length of the small-diameter part 8 a of the triggershaft 8 is so set up that the hammering member 7 may not contact withthe partition part 2 e when the small-diameter part 8 a is fitted in thehammering member 7.

[0129] In this arrangement, the spring force of the compression spring 6disposed in the center tube body 2 and the head part tube body 1 can beadjusted by regulating the length of threaded engagement of the centertube body 2 with the head part tube body 1. Consequently, the magnitudeof the above impact can be regulated.

[0130] Thereafter, when the pressed tool main body 5 is drawn in thereverse direction; the hammering member 7 is returned until thehammering member 7 is abutted to the partition part 2 e by the force ofthe compression spring 6. Further, with respect to the trigger member10, the trigger shaft 8 is pushed back by the force of the deformed coilspring 9, so that the sliding shaft 11 is also pushed back.

[0131] Accordingly, the trigger shaft 8 is drawn off the center hole 7 aand is biased once more. As a result, the tool for wristwatch 20 returnsto the original arrangement as shown in FIG. 2.

[0132] In the above first embodiment, the coil spring has been used asthe compression spring 6. However, as for the compression spring 6, aleaf spring, a corrugated spring or the like can be also used.

[0133] Also, the tool component for removing a band connecting pin isnot limited to that shown in FIG. 1. For example, a deformed pin of, forexample, elliptic section can be used. The tool component can bereplaced by any one of unlimited configuration and usage. The engagementof the tool component with the sliding shaft is not limited to theinsertion of the straight shaft in the shaft hole under pressure, andmay be accomplished by at least one of fixing of a shaft in a shaft holeby means of a setscrew, engagement of an external thread with aninternal thread, interlock of a protrudent part with a recessed part andinterlock of a taper shaft with a bearing. Further, if a tool componentwhose diameter is smaller than that of the small-diameter hole 4 c ofthe tip tube body 4 can be formed, the tool component may be formeduniformly and with the sliding shaft.

[0134] The thus constructed tool for wristwatch 20 according to thefirst embodiment has the following functions and effects.

[0135] That is to say, in the tool main body 5 of the wristwatch tool20, the hammering mechanism consisting of the compression spring 6, thehammering member 7 and the trigger member 10 are provided. Therefore,strong force that cannot be obtained by the conventional static pushingcan be applied to the tip of the tool for wristwatch 20 which is fittedwith the tool component for removing a band connecting pin. As a result,pins can be removed easily, even if it is rusted.

[0136] Further, the predetermined compression level of the compressionspring 6 can be regulated by changing the length of threaded engagementof the center tube body 2 with the head part tube body 1. Therefore, themagnitude of impact on the tool component for wristwatch can be easilyregulated while constantly performing the triggering operation of thetrigger member 10 at given stroke of the sliding shaft 11.

[0137] Moreover, the trigger shaft 8 is energized to be biased by thedeformed coil spring 9, so that, at the initial stage of operation, thehammering member 7 can be thrust upward by the biased trigger shaft 8.After given stroke of the sliding shaft 11, the trigger shaft 8 standserect by the interaction between the slant face 2 f of the partitionpart 2 e of the center tube body 2 and the trigger shaft 8. Thisfunctions as a trigger, and the compression spring 6 is releasedinstantly so that the hammering member 7 can be pushed out.

[0138] At that time, force of about 15 to 25 times that at the staticpushing is instantaneously applied to the tip of the tool for wristwatch20.

[0139] Nextly, the second embodiment of the present invention will bedescribed with reference to drawings.

[0140]FIG. 6 is a partial sectional side view of a tool for removing aband connecting pin, which is a tool for wristwatch according to thesecond embodiment of the present invention.

[0141] In FIG. 6, numeral 30 denotes pliers. Numeral 21 denotes aone-side functioning part of the pliers, and numeral 22 denotes another-side functioning part of the pliers. Numeral 23 denotes a fulcrumof both of the functioning parts 21, 22. The front end portion of theone-side functioning part 21 is bent at substantially a right angle sothat a hook part 21 a is formed. Perpendicular line from the fulcrum 23crosses on the extension line L of the inside outline of the hook part21 a.

[0142] Numeral 24 denotes a wristwatch band receiving member as anexterior part fixing jig, which is secured to an outside portion offront end of the other-side functioning part 22. The band receivingmember 24 is provided with a through hole 25 a which is adapted to passthe below described main body or sliding shaft of wristwatch tooltherethrough. Further, the band receiving member 24 is provided withclearance groove 24 a for a removed band connecting pin, which isdisposed in a neighboring opposite receiving surface on the center axisof the through hole 25 a.

[0143] Numeral 20 denotes a tool for wristwatch of the same constructionas in the first embodiment. The tool main body has a substantiallycylindrical shape and is not coated with a resin. Numeral 25 denotes abearing bonded to the front end of the other-side functioning part 22.At the bearing 25, a through hole 25 a, which is adapted to pass thetool of wristwatch 20 or sliding shaft 11 therethrough, is formed.

[0144] The front end of the sliding shaft 11 is replaceably fitted withremoving pin 13, which is a tool component for removing a bandconnecting pin. Numeral 26 denotes a head part secured to the rear endof the tool for wristwatch 20 or formed as a unified part of tool mainbody. The head part 26 is engaged with the inside surface 21 b of theone-side functioning part 21. Numeral 27 denotes a return springconsisting of a compression coil spring, which is inserted in the toolfor wristwatch 20 between the head part 26 of the tool for wristwatch 20and the bearing 25. The return spring 27 energizes the head part 26toward the one-side functioning part 21.

[0145] The upper limit of the open angle of the pliers 30 is regulatedby the hook part 21 a. The return spring 27 is not limited to the abovecoil spring, and the position at which the return spring 27 is disposedis not limited as long as it lies between the both of the functioningparts.

[0146] Nextly, the operation of the above tool for removing a bandconnecting pin will be described.

[0147] A wristwatch band, not shown, is disposed on the band receivingmember 24, and the axial center of the tool for wristwatch 20 and theaxial center of a band connecting pin; are positioned so as to alignwith each other. Thereafter, the handles of the pliers 30 are grasped sothat the front ends of the pliers 30 are closed.

[0148] The front end inside surface 21 b of the one-side functioningpart 21 pushes the surface of the head part 26 while sliding thereon.Consequently, the tool 26 for removing a band connecting pin is pusheddownward, thereby pushing the band connecting pin.

[0149] When grasping of the handles of the pliers 30 is continued, thehammering means is actuated upon passage of predetermined stroke in themanner as described with respect to the operation of the firstembodiment, so that strong impact is applied to the band connecting pin.

[0150] The thus constructed tool for wristwatch according to the secondembodiment exerts the following functions and effects.

[0151] The tool for wristwatch 20 can be secured by means of the pliers30, and the band can be secured by means of the band receiving member24. The operation for removing a band connecting pin can be performed byone hand and thus the operation can be further facilitated.

[0152] The band connecting pin is pushed by large impact strength, sothat pins, even if rusted, can be easily pushed out from the band bygrasping the pliers 30 with common force.

[0153] In addition, the above second embodiment will be applicable to,for example, the operation for removing a case back or a bezel bychanging wristwatch tool components and jigs for fixing wristwatchexterior parts (band receiving member).

[0154] Nextly, the third embodiment of the present invention will bedescribed with reference to drawings.

[0155]FIG. 7 is a plan view of a tool component for opening a wristwatchcase back or bezel according to the third embodiment of the presentinvention. FIG. 8 is a view of a section on the line A-A of FIG. 7. FIG.9 is a plan view of a tool for opening a case back or bezel, which isfixed to the sliding shaft.

[0156] In FIGS. 7 and 8, numeral 31 denotes a wrench which is a toolcomponent for opening a wristwatch case back or bezel. This wrench issecured to the sliding shaft 11 at the front end of the tool forwristwatch as described in the first embodiment, and provides means foropening a case back or bezel.

[0157] Edge part 31 a of acute angle section is provided at the frontend of the wrench 31. Further, a nonthrough shaft hole 31 c, which isthe engagement section with the sliding shaft 11, is formed in thecenter of the rear end surface of the wrench 31. Moreover, a threadedhole 31 b for setscrew, for fixing the wrench 31 to the engagement part11 b of the sliding shaft 11 extends from the upper surface of thewrench 31 to the shaft hole 31 c. Numeral 32 denotes a setscrew adaptedto engage the threaded hole 31 b for setscrew.

[0158] As shown in FIG. 9, after inserting the sliding shaft 11 in thetip tube body 4, the wrench 31 is fixed to the engagement part 11 b ofthe sliding shaft 11 by means of the setscrew 32.

[0159] The thus constructed tool for wristwatch according to the thirdembodiment exerts the following functions and effects.

[0160] The wrench 31 is fixed to the sliding shaft 11 of the same toolfro wristwatch has in the first embodiment. Therefore, when a case backof chamfer structure is disassembled from a wristwatch or a bezel isdisassembled from a wristwatch case, the edge part 31 a is engaged witha wrenching point and the main body of tool for wristwatch is pressed.As a result, even if it is the case back or bezel which were rusted andsecured firmly and it is pressed by the same force as usual, largeimpulse can be exerted to the wrench 31. Therefore, even if the caseback is rusted, it can be opened easily.

[0161] This tool for wristwatch can also be applied to, for example, thedisassembly of register rings in the same manner.

[0162] Nextly, the fourth embodiment of the present invention will bedescribed with reference to drawings.

[0163]FIG. 10 is a front view of a tool for removing a band connectingpin, which is a fourth form of tool for wristwatch according to thepresent invention. FIG. 11 is an exploded sectional view of the tool forwristwatch shown in FIG. 10. FIGS. 12 to 14 are sectional viewsexplaining operating conditions of the above tool for wristwatch. FIG.15 is a partial enlarged sectional view explaining the manner ofremoving or fitting of a removing pin detachably fitted to the tool forwristwatch shown in FIG. 10.

[0164] In FIGS. 10 and 11, numeral 40 generally denotes the fourth formof tool for wristwatch according to the present invention.

[0165] As shown in FIGS. 10 and 11, at the upper end of the tool forwristwatch 40, substantially cylindrical head part tube body 41, ofwhich one end is closed, is provided. The inner wall of the head parttube body 41 is provided with inside threaded part 41 a. At the lowerpart of the head part tube body 41, substantially cylindrical centertube body 42 is fitted by engaging an outside threaded part 42 aprovided on an outer periphery of upper end portion of the center tubebody 42 with the inside threaded part 41 a of the head part tube body41.

[0166] At the lower end portion of the center tube body 42, an insidethreaded part 42 b, which is adapted to engage outside threaded part 44a provided on an outer periphery of a tip tube body 44 as describedlater is formed. Further, at the center of the center tube body 42 athrough hole 42 c is formed. At the lower portion of this through hole42 c, a partition part 42 e having a small-diameter hole 42 d whosediameter is smaller than that of the through hole 42 c is provided. Thispartition part 42 e is provided with slant face part 42 f, which isextending from the small-diameter hole 42 d of the partition part 42 eto the inner wall 42 g provided with the inside threaded part 42 b.

[0167] Holding tube body 43 is constructed by threadedly engaging thehead part tube body 41 with the center tube body 42.

[0168] At the lower end portion of the center tube body 42, a holdingtaper part 42 h having its diameter decreased so as to facilitateholding at the time of holding by hand.

[0169] At the lower portion of the holding tube body 43, namely, at thelower portion of the center tube body 42, is coupled with substantiallycylindrical tip tube body 44 having taper outline is secured by engagingoutside threaded part 44 a provided on the outer periphery ofsmall-diameter part 44 d at an upper end portion of the tip tube body 44with the inside threaded part 42 b provided at the lower end portion ofthe center tube body 42.

[0170] At the center of the tip tube body 44, a through hole 44 b isformed. The through hole 44 b is so formed that it is continuous tosmall-diameter hole 44 c formed at the lower end side, namely, tip endside of the tip tube body 44.

[0171] Substantially cylindrical tool main body 45 of the tool forwristwatch 40 is constructed by threadedly engaging the holding tubebody 43, which consists of the head part tube body 41 and the centertube body 42, with the tip-tube body 44.

[0172] Further, as shown in FIGS. 10 and 12, a compression spring 46consisting of a compression coil spring and a substantially cylindricalhammering member 47 are slidably accommodated inside the holding tubebody 43, namely, inside the through hole 42 c of the center tube body42, in such a condition that the hammering member 47 is energizeddownward by the spring force of the compression spring 46.

[0173] This hammering member 47 is substantially in the form of abottomed cylinder, and, at its center, has a center hole 47 a which is anonthrough hole. As described later, small-diameter part 51 a of anupper portion of sliding shaft 51 can be inserted in the center hole 47a.

[0174] At the lower end of the hammering member 47, a large-diameterpart 47 b is formed and at the upper end of the hammering member 47, anupper end part 47 c having substantially the shape of a dome is formed.The hammering member 47 has a taper surface 47 d whose diameter isgradually decreased from the upper end part 47 c toward thelarge-diameter part 47 b. The hammering member 47 is so formed that itis continuous from the lower end of the taper surface 47 d through slantface 47 e to the large-diameter part 47 b.

[0175] Trigger shaft 48 is disposed between-the center tube body 42 andthe tip tube body 44, namely, inside of the inner wall 42 g of thethrough hole 42 c under the partition part 42 e of the center tube body42.

[0176] This trigger shaft 48 is substantially cylindrical, and at theupper end portion thereof, abutment surface 48 a having the shape of aslant cone is formed. Further, at the center portion of the triggershaft 48, a vertical through hole 48 b is formed. As described later,small-diameter part 51 a of an upper portion of sliding shaft 51 canpass through the through hole 48 b.

[0177] Moreover, under the trigger shaft 48, sliding shaft 51 isdisposed. At the upper portion of the sliding shaft 51, small-diameterpart 51 a is formed. In addition, at the lower portion (front endportion) of the sliding shaft 51, large-diameter engagement part 51 b,to which wristwatch tool components can be replaceably fixed isprovided. Lock part 51 c whose diameter is larger than that of theengagement part 51 b is provided in the middle of the sliding shaft 51.

[0178] Furthermore, a compression coil spring 49 is interposed betweenthe lower end 48 c of the trigger shaft 48 and the lock part 51 c of thesliding shaft 51. The tool for wristwatch is so constructed that thetrigger shaft 48 is energized upward by the spring force of thecompression coil spring 49. As a result abutment surface 48 a having aslant cone shape, which is provided at the upper end of the triggershaft 48, abuts the large-diameter part 47 b provided at the lower partof the hammering member 47.

[0179] As a result, as shown in FIG. 12, the hammering member 47 isenergized downward by the spring force of the compression spring 46, sothat one end portion 47 f of the large-diameter part 47 b of the lowerend of the hammering member 47 is guided by the abutment surface 48 ahaving the shape of a slant cone, which is provided at the upper end ofthe trigger shaft 48, and one end 47 g of the slant face 47 e of thehammering member 47 is guided by the slant face part 42 f of thepartition part 42 e. Therefore, the axial center of the hammering member47 is biased toward the inner wall 42 g.

[0180] Furthermore, the sliding shaft 51 is so mounted that the slidingshaft 51 is energized downward by the spring force of the compressioncoil spring 49 to thereby cause the engagement part 51 b of the slidingshaft 51 to pass through the small-diameter hole 44 c of the tip tubebody 44 and protrude loosely therefrom. However, since the lock part 51c of the sliding shaft 51 has a diameter larger than that of thesmall-diameter hole 44 c of the tip tube body 44, the sliding shaft 11may not fall out from the small-diameter hole 44 c of the tip tube body44.

[0181] In this construction, the spring force of the compression coilspring 49 which energizes the hammering member 47 downward is set forbeing greater than the spring force of the compression spring 46 whichenergizes the trigger shaft 48 upward. Consequently, as shown in FIG.12, when the tool for wristwatch is in no use, the lower end 48 c of thetrigger shaft 48 is held abutting the small-diameter part 44 d of theupper end portion of the tip tube body 44.

[0182] In this state, as shown in FIG. 12, the length of thesmall-diameter part 51 a of the upper portion of the sliding shaft 51 isso determined that upper end 51 d of the small-diameter part 51 a of theupper portion of the sliding shaft 51 is slightly protrudes from thethrough hole 48 b.

[0183] Furthermore, as shown in FIG. 15, the engagement part 51 b of thesliding shaft 51 is provided with engaging groove 51 e for removing pin.

[0184] On the other hand, as shown in FIG. 15, at the center of theremoving pin 52, which is a tool component for removing a bandconnecting pin, a lock hole 52 a is formed. The removing pin 52 furtherincludes straight pin part 52 c which can be inserted in a bandconnecting pin insertion hole of watchband. In the interior of the lockhole 52 a, recessed groove 52 d is formed. Inside of this recessedgroove 52 d, O-ring member 52 f consisting of an elastic member such asa rubber, a synthetic resin or the like is disposed.

[0185] At the base end of the straight pin part 52 c, there is providedabutment member 52 g consisting of a flexible member such as a siliconerubber, a urethane rubber or the like. Accordingly, where a bandconnecting pin of watchband is removed from the watchband by using thetool for wristwatch 40, even if the removing pin 52 collides with thevicinity of a band connecting pin insertion hole of watchband by impactforce, the impact force by the abutment member 52 g would be reduced. Asa result, marring and damaging of the vicinity of the band connectingpin insertion hole of watchband can be effectively prevented.

[0186] The removing pin 52 of the above structure, as shown in FIG. 15,is so constructed that, the engagement part 51 b of the sliding shaft 51is inserted in the lock hole 52 a of the removing pin 52. As a result,the O-ring member 52 f, which is disposed in the recessed groove 52 d ofthe lock hole 52 a, is fitted in the engaging groove 51 e of theengagement part 51 b of the sliding shaft 51. Consequently, removing pin52 can be detachably fitted to the engagement part 51 b of the slidingshaft 51.

[0187] As shown in FIG. 16, push pin 52′ may be used in place of theabove removing pin 52 so that when the connecting pin having beenremoved from a band connecting pin insertion hole of watchband isinserted again in a band connecting pin insertion hole, the tool forwristwatch 42 may be used.

[0188] Accordingly, as shown in FIG. 16, the push pin 52′ is devoid of apart corresponding to the straight pin part 52 c of removing pin 52shown in FIG. 15. Instead, at the center of the abutment member 52 g, arecessed part 52 h of cone shape to which a connecting pin is contactedis formed. When connecting pin is pushed, the escape of connecting pincan be prevented by this recessed part 52 h of cone shape.

[0189] Moreover, as shown in FIG. 17, the push pin 52′ is devoid of apart corresponding to the straight pin part 52 c of removing pin 52shown in FIG. 15. Instead, at the center of the abutment member 52 g, arecessed part 52 h consisting of a blind hole for insertion of aconnecting pin may be provided. When a connecting pin is pushed, theescape of connecting pin can be more effectively prevented by thisrecessed part 52 h consisting of a blind hole. The recessed part 52 h ofthe push pin 52′ is especially suitable for fitting, for example, abridge pin, a pin or a C ring.

[0190] The other components are identical with those of the removing pin52, so that like reference numbers have been assigned to like componentmembers.

[0191] The present invention is so constructed that the tool ofwristwatch 40 is operated, as described later, by using the above pushpin 52′ in the state that a connecting pin is connected or fitted in therecessed part 52. As a result, the connecting pin can be inserted in aband connecting pin insertion hole of watchband by the induced impactforce.

[0192] Nextly, the operation of the thus constructed tool for wristwatch40 will be described with reference to FIGS. 12 to 14.

[0193] First, the head part tube body 1 is held by hand so that thecenter position of the tool for wristwatch 40 of FIG. 12 is aligned withthe axial center of a wristwatch band connecting pin (not shown).

[0194] Then, as shown in FIG. 13, the tool for wristwatch 40 is pressedin the arrow direction. Consequently, the sliding shaft 51 rises,resisting the spring force of the compression coil spring 49.

[0195] In accordance with the rise of the sliding shaft 51, the upperend 51 d of the small-diameter part 51 a of the upper portion of thesliding shaft 51 passes through the through hole 48 b of the triggershaft 48 and protrudes therefrom. Thus, the upper end 51 d abuts the oneend portion 47 f of the large-diameter part 47 b of the lower end of thehammering member 47.

[0196] In this state, the axial center of the hammering member 47 isbiased toward the inner wall 42 g as aforementioned, so that the upperend 51 d of the small-diameter part 51 a of the sliding shaft 51 is notfitted in the center hole 47 a of the hammering member 47. Therefore,while the upper end 51 d of the small-diameter part 51 a of the slidingshaft 51 abuts the large-diameter part 47 b of the lower end of thehammering member 47, the hammering member 47 is raised, resisting thecompression spring 46.

[0197] At this stage, the compression spring 46 and the compression coilspring 49 are compressed, respectively.

[0198] Further, in this state, the trigger shaft 48 is energized upwardby the spring force of the compression spring 46 b. As a result, theuppermost portion of the conical abutment surface 48 a of the upper endof the trigger shaft 48 abuts the slant face part 42 f of the partitionpart 42 e so that the trigger shaft 48 can not be moved upward any more.

[0199] On the other hand, in accordance with the rise of the slidingshaft 51, the hammering member 47 is further raised, so that the one end47 g of the slant face 47 e of the hammering member 47 is guided by theslant face part 42 f of the partition part 42 e. As a result, thehammering member 47 is gradually departed from the inner wall 42 g tomove toward the center, so that the hammering member 47 is thrustupward. Accordingly, the compression spring 46 is compressed by thehammering member 47 so that the hammering member 47 is pushed back withlarge force.

[0200] When the tool main body 45 of the tool for wristwatch 40 ispressed further, in the arrow direction, the upper end 51 d of thesmall-diameter part 51 a of the sliding shaft 51 is protruded from thethrough hole 48 b of the trigger shaft 48, so that the hammering member47 is pushed upward. Accordingly, the upper end part 47 c of hammeringmember 47 having substantially the shape of a dome is guided along theinner wall of the through hole 42 c of the center tube body 42. As aresult, the axial center of the hammering member 47 is further moveduntil standing erect so that the axial center of the hammering member 47is shifted to the center of the center tube body 42 (see FIG. 13).

[0201] When the sliding shaft 51 is slid in predetermined stroke, thecompression spring 46 reaches a preset compression level. As a result,as shown in FIG. 14, the axial center of the hammering member 47 issubstantially aligned with the axial center of the tool main body 45. Atthis stage, the trigger operation is initiated.

[0202] That is, at this stage, the small-diameter part 51 a of thesliding shaft 51 and the center hole 47 a of the hammering member 47align with each other. At that moment, the spring force of thecompression spring 46 is suddenly released, so that the small-diameterpart 51 a of the sliding shaft 51 is instantaneously fitted in thecenter hole 47 a of the strongly pressed hammering member 47. As aresult, as shown in FIG. 15, strong impact (hammering force) is exertedon the sliding shaft 51.

[0203] In this arrangement, the spring force of the compression spring46, which is disposed in the center tube body 42 and the head part tubebody 41 can be regulated by changing the length of threaded engagementof the center tube body 42 with the head part tube body 41.Consequently, the magnitude of the above impact can be regulated.

[0204] Thereafter, when the pushed tool main body 45 is drawn in thereverse direction, one end portion 47 f of the large-diameter part 47 bof the lower end of the hammering member 47 is guided by the abutmentsurface 48 a having slant cone shape of the upper end of the triggershaft 48, by the spring force of the compression spring 46. Further, oneend 47 g of the slant face 47 e of the hammering member 47 is alsoguided by the slant face part 42 f of the partition part 42 e.Therefore, the axial center of the hammering member 47 is biased towardthe inner wall 42 g. Thus, the hammering member 47 is returned to theoriginal position of FIG. 12.

[0205] Further, at this stage, the sliding shaft 51 is energizeddownward by the spring force of the compression coil spring 49, so thatthe sliding shaft 11 is pushed back to return to the original positionof FIG. 12.

[0206] In the above fourth embodiment, as in the first embodiment asshown in FIG. 1, the coil spring has been used as the compression spring6. However, as for the compression spring 6, a leaf spring, a corrugatedspring or the like can be also used.

[0207] Also, the removing pin 52 as a tool component for removing a bandconnecting pin is not limited to that shown in FIG. 15. For example,deformed pin of, for example, elliptic section can be used. The toolcomponent can be replaced by any one of unlimited configuration andusage. The engagement of the tool component with the sliding shaft isnot limited to the insertion of straight shaft in shaft hole underpressure, and may be accomplished by at least one of fixing of a shaftin a shaft hole by means of a setscrew, engagement of an external threadwith an internal thread, engagement of a protrudent part with a recessedpart and engagement of a taper shaft with a bearing. Further, if a toolcomponent can be formed in a diameter which is smaller than that of thesmall-diameter hole 44 c of the tip tube body 44, the tool component andthe sliding shaft 41 may be formed into unified body.

[0208] With respect to-the material of the straight pin part 52 c of theremoving pin 52, the straight pin part 52 c can be constituted of thesame material as employed in the first embodiment shown in FIGS. 1 to 5,so that the straight pin part 52 c can be easily restored to theoriginal form without suffering bending or breakage in the operation forremoving or inserting a band connecting pin of watchband or adjustingthe same.

[0209] In addition, the above tool for wristwatch 40 according to thefourth embodiment can also be used in a manner, not shown, wherein it issecured by means of the pliers 30 as shown in FIG. 6. Further, the toolfor wristwatch 40 can be used in combination with the wrench 31 as atool component for opening a bezel as shown in FIGS. 7 to 9 in place ofthe removing pin 52.

[0210] The thus constructed tool for wristwatch 40 according to thefourth embodiment exerts the following functions and effects.

[0211] Namely, in the interior of the tool main body 45 of the tool forwristwatch 40, the hammering means including the compression spring 46,the hammering member 47, the trigger shaft 48, the compression coilspring 49 and the sliding shaft 51 are provided. Therefore, large forcethat cannot be obtained by the conventional static pushing can beapplied to the extreme tip of the tool for wristwatch 40 which is fittedwith the tool component for removing a band connecting pin. As a result,pins, even if rusted, can be easily removed.

[0212] Further, the preset compression level of the compression spring46 can be regulated by changing the length of threaded engagement of thecenter tube body 1 42 with the head part tube body 41. Therefore, whileconstantly performing the triggering operation of the trigger member 40is performed constantly at certain stroke of the sliding shaft 41, themagnitude of impact on the tool component for wristwatch can be easilyregulated.

[0213] Moreover, the trigger shaft 48 is energized so as to be slantedby the deformed coil spring 49. As a result, at the initial stage ofoperation, the slanted hammering member 47 can be pushed upward by thesliding shaft 51.

[0214] By virtue of the interaction between the slant face 47 e of thehammering member 47 and the slant face part 42 f of the partition part42 e and by virtue of the interaction between the upper end part 47 c ofhammering member 47 having substantially the shape of a dome and theinner wall of the through hole 42 c of the center tube body 42, afterpredetermined stroke of the sliding shaft 51, the hammering member 47stands erect. This becomes a trigger, and the small-diameter part 51 aof the sliding shaft 51 is instantaneously fitted in the center hole 47a of the hammering member 47. Consequently, the compression spring 46 issuddenly released so that the hammering member 47 can be pushed out.

[0215] At that time, force of about 15 to 25 times that at the staticpushing is instantaneously applied to the extreme tip of the tool forwristwatch 40.

[0216] Next, the fifth embodiment of the present invention will bedescribed.

[0217]FIG. 18 is a front view of a tool for removing a band connectingpin, which is a fifth form of tool for wristwatch according to thepresent invention. FIG. 19 is an exploded sectional view of the tool forwristwatch shown in FIG. 18. FIGS. 20 and 21 are sectional viewsexplaining operating conditions of the above tool for wristwatch.

[0218] In FIGS. 18 and 19, numeral 60 generally denotes the fifth formof tool for wristwatch according to the present invention.

[0219] As shown in FIGS. 18 and 19, at the upper end portion of the toolfor wristwatch 60, substantially cylindrical upper tube body 61 whoseone end is closed is provided. At the inner wall of the lower endportion of the upper tube body, an inside threaded part 61 a is formed.Further, at the outer wall of the upper tube body 61, an outsidethreaded part 61 b is formed.

[0220] At the lower part of the upper tube body 61, substantiallycylindrical lower tube body 62 having taper outline is detachably fittedby treadedly engaging inside threaded part 62 a provided on an innerperiphery of upper end portion of the lower tube body 62 with theoutside threaded part 61 b of the upper tube body 61.

[0221] Further, at the center of the lower tube body 62, a through hole62 b is formed. In the vicinity of the lower end of this through hole 62b, a flange part 62 c is protruded. This flange part 62 c forms recessedpart 62 d for abutment member at the lower end of the through hole 62 b.

[0222] The thus formed recessed part 62 d for abutment member is fittedwith abutment member 64 consisting of a flexible member such as, asilicone rubber, a urethane rubber or the like.

[0223] Accordingly, where a band connecting pin of watchband is removedfrom a band connecting pin insertion hole of watchband by using the toolfor wristwatch 60, even if the tip of the lower tube body 62 of the toolfor wristwatch 60 collides with the vicinity of a band connecting pininsertion hole of watchband by impact force, the impact force would bereduced by the abutment member 64. As a result, marring and damaging ofthe vicinity of the band connecting pin insertion hole of watchband canbe effectively prevented.

[0224] Moreover, upper-end threaded part 66 a of removing pin 66 isdetachably engaged with the inside threaded part 61 a of the upper tubebody 61. The tool for wristwatch is so constructed that the screnringstate between the inside threaded part 62 a provided on an innerperiphery of upper end portion of the lower tube body 62 and the outsidethreaded part 61 b of the upper tube body 61 can be adjusted. As aresult, as shown in FIGS. 20 and 21, straight pin part 66 b of the frontend portion of the removing pin 66 can be protruded from through hole 64a which is formed at the center of the abutment member 64 of the lowertube body 62. Furthermore, the length of the protrusion thereof can beregulated, or the protrusion thereof can be avoided by changing thethreaded engagement state.

[0225] Moreover, the length of protrusion of straight pin part 66 b thatcan be regulated by one turn can be increased, and the speed ofregulation can be doubled or trebled, by using a double thread or atriple thread for these threaded parts.

[0226] For the ease of carriage, the upper tube body 61 is fitted withclip member 61 c of the same structure as that of a fountain pen clipwhereby the tool for wristwatch can be held on a pocket or the like.

[0227] Further, although not shown, it is preferred that the outersurfaces of the above upper tube body 61 and lower tube body 62 shouldbe provided with minute unevenness for non-slip from the viewpoint ofeasiness in operating the tool for wristwatch by holding the same byhand.

[0228] With respect to the material of the straight pin part 66 bconstituting the front end portion of the removing pin 66, the straightpin-part 66 b can be constituted of the same material as employed in thefirst embodiment referring to FIGS. 1 to 5, so that the straight pinpart 66 b can be easily restored to the original form without sufferingbending or breakage in the operation for inserting a band connecting pinof watchband or adjusting the same.

[0229] Nextly, the operation of the thus constructed tool for wristwatch60 will be described with reference to FIGS. 20 and 21.

[0230] The tool for wristwatch 60 according to this fifth embodiment isfundamentally one used for removing a connecting pin in which aconnecting pin is not completely drawn off from a band connecting pininsertion hole of watchband, after the removing operation, by using thetool for wristwatch 20 of the first embodiment as shown in FIGS. 1 to 5,the tool for wristwatch 20 together with pliers according to the secondembodiment as shown in FIG. 6, and the tool for wristwatch 40 of thefourth embodiment as shown in FIGS. 10 to 15.

[0231] However, where a connecting pin can be removed from a watchbandwithout the need to use the tool for wristwatch 20, 40, the tool forwristwatch 60 can naturally be employed in the removing of connectingpin.

[0232] Now, the tool for wristwatch 60 is initial condition that thestraight pin part 66 b of the front end portion of the removing pin 66is not protruded from the through hole 64 a (through hole 62 b) which isprovided at the center of the abutment member 64 of the lower tube body62 as shown in FIG. 20. From this state, the threaded engagementcondition between the inside threaded part 62 a provided on the innerperiphery of upper end portion of the lower tube body 62 and the outsidethreaded part 61 b of the upper tube body 61 are regulated by rotatingthe threaded parts 62 a, 61 b in opposite directions each other so as toloosen the screwing condition, while holding the upper tube body 61 andthe lower tube body 62.

[0233] As a result, as shown in FIG. 21, the a length of the straightpin part 66 b of the front end portion of the removing pin 66 isregulated so that the straight pin part 66 b is protruded from thethrough hole 64 a provided at the center of the abutment member 64 ofthe lower tube body 62.

[0234] Then, in the state that a connecting pin is not completely drawnoff from a band connecting pin insertion hole of watchband asaforementioned, the straight pin part 66 b of the front end portion ofthe removing pin 66 is pushed into the band connecting pin insertionhole by hand or the impact of a hammer or the like. As a result, theconnecting pin can be completely drawn off from the band connecting pininsertion hole.

[0235] After the use, the threaded engaging condition between the insidethreaded part 62 a provided on the inner periphery of upper end portionof the lower tube body 62 and the outside threaded part 61 b of theupper tube body 61 are regulated by rotating the threaded parts 62 a, 61b in opposite directions each other so as to fasten the threadedengaging condition, while holding the upper tube body 61 and the lowertube body 62. As a result, the tool for wristwatch 60 may be restored tothe initial condition that the straight pin part 66 b of the front endportion of the removing pin 66 is not protruded from the through hole 64a which is provided at the center of the abutment member 64 of the lowertube body 62 as shown in FIG. 20.

[0236] In addition, the removing pin 66 is so constructed that the typethereof can be selected and its replacement can be effected bydetachably screwing the upper-end threaded part 66 a of the removing:pin 66 with the inside threaded part 61 a of the upper tube body 61.

[0237] The type of removing pin 66 is not limited to the removing pin 66having the straight pin part 66 b at the front end portion thereof, and,for example, removing pin 66 of push pin configuration having recessedpart 52 h at the front end thereof as shown in FIGS. 16 and 17.

[0238] With respect to the thus constructed tool for wristwatch 60according to the fifth embodiment, the screwing condition between theinside threaded part 62 a provided on the inner periphery of upper endportion of the lower tube body 62 and the outside threaded part 61 b ofthe upper tube body 61 is regulated. As a result, the length ofprotrusion of the straight pin part 66 b of the front end portion of theremoving pin 66 from the through hole 64 a provided at the center of theabutment member 64 of the lower tube body 62 can be easily regulated.

[0239] Heretofore, tool for wristwatch having long straight pin partshave been employed, so that breakage of removing pins has often beenexperienced. However, with respect to the tool for wristwatch 60 of thepresent invention, since the protruded straight pin part 66 b can beadjusted to appropriate length, the occurrence of removing pin breakagehas markedly been reduced.

[0240] The tool for wristwatch 60 is used for removing connecting pin inwhich a connecting pin is not completely drawn off from a bandconnecting pin insertion hole of watchband, after the removing operationby using the tool for wristwatch 20 and 40. Thereafter, the straight pinpart 66 b of the front end portion of the removing pin 66 is pushed intothe band connecting pin insertion hole so that the connecting pin can beeasily and completely drawn off from the band connecting pin insertionhole. Therefore, the tool for wristwatch is extremely convenient.

[0241] In addition, the tool for wristwatch 60 of the present inventioncan naturally be used in the press insertion of a connecting pin in aband connecting pin insertion hole of watchband.

[0242] Nextly, the sixth embodiment of the present invention will bedescribed.

[0243]FIG. 22 is a top view of a wristwatch tool set for accommodatingthe tool for wristwatch according to the present invention. FIG. 23 is aperspective view of a hold guide member included in the wristwatch toolset of FIG. 22. FIG. 24 is a perspective view showing one manner ofoperation for removing a connecting pin from a band connecting pininsertion hole of watchband with the use of the tool for wristwatch andhold guide member of FIG. 22.

[0244] In FIG. 22, numeral 70 generally denotes a wristwatch tool setfor accommodating the tool for wristwatch according to the presentinvention.

[0245] The wristwatch tool set 70 has substantially the shape of a box,and includes underlying box main body 71, cover member 73 openablysecured to one side of the box main body 71 by means of hinge member 72,and accommodation member 75 fitted in box part 74 of the box main body71.

[0246] The underlying box main body 71 and the cover member 73 are soconstructed that the cover member 73 can be closed and fixed bydetachably interlocking lock piece 71 b, which protrudes from front sidewall 71 a of the box main body 71, in recessed part for lock 73 b, whichis provided in front side wall 73 a of the cover member 73.

[0247] The upper surface side of the accommodation member 75 is providedwith first recessed part for accommodation 76 for accommodating the bandconnecting pin removing tool 40, which is the fourth form of tool forwristwatch of the present invention as shown in FIG. 10, second recessedpart for accommodation 77 for accommodating the band connecting pinremoving auxiliary tool 60, which is the fifth form of tool forwristwatch as shown in FIG. 18, third recessed part for accommodation 78for accommodating the removing pin 52 as shown in FIG. 15, and fourthrecessed part for accommodation 79 for accommodating the push pin 52′ asshown in FIG. 16.

[0248] Further, the upper surface side of the accommodation member 75 isprovided with fifth recessed part for accommodation 80 for accommodatingthe hold guide member 81.

[0249] The accommodation member 75 is constituted of, for example, aflexible material such as a sponge, a foam or the like so that themarring of band connecting pin removing tools 40, 60, removing pin 52and push pin 52′ by collision to each other during carriage can beavoided.

[0250] In this embodiment, for the ease of carriage, the band connectingpin removing tool 40 is fitted with clip member 56 c of the samestructure as that of a fountain pen clip, so that the band connectingpin removing tool 40 can be held on a pocket or the like.

[0251] Further, in this embodiment, the band connecting pin removingtool 40 fitted with the removing pin 52 in advance is accommodated inthe first recessed part for accommodation 76. The removing pin 52, notshown, is detachably fitted with cylindrical protective member 81 so asto prevent the marring thereof.

[0252] On the other hand, the hold guide member 81 has substantially theshape of a clip, and comprises a pair of clip hold members 82, 83 andconnecting part 84 which couples the clip hold members 82, 83 at baseend portions in curved form to thereby impart elasticity.

[0253] The respective inner end portions 82 a, 83 a of the clip holdmembers 82, 83 abut each other, so that respective front end portions 82b, 83 b of the clip hold members 82, 83 are in open condition.

[0254] Moreover, on the outside surf-ace of the respective front endportions 82 b, 83 b of the clip hold members 82, 83 respective tapersurfaces 82 c, 83 c are formed so as to facilitate holding by fingers.

[0255] At the inside of the connecting part 84 of the clip hold members82, 83, pin catcher part 85 which is a recessed part of substantiallycylindrical through hole configuration is provided. As shown in FIG.23(B), the pin catcher part 85 is adapted to hold the tip part (headpart) 96 of connecting pin 94 so as to prevent the dropping and missingof connecting pin 94 when removing a connecting pin from a bandconnecting pin insertion hole.

[0256] Although the material of the hold guide member 81 is notparticularly limited, it is preferred that the hold guide member 81should be constituted of a flexible material, for example, a rubber suchas silicone rubber or urethane rubber, or a synthetic resin such aspolyethylene or polypropylene, from the viewpoint that marring of thewristwatch band at holding thereof can be avoided.

[0257] The thus constructed hold guide member 81 can appropriately beused in the operation for, for example, removing a connecting pin from aband connecting pin insertion hole of watchband 92 of wristwatch 90, byusing the tool for wristwatch 40 and hold guide member 81 of FIG. 22, asshown in FIG. 24.

[0258] Namely, as shown in FIG. 24, the hold guide member 81 is graspedby hand and the watchband 92 of wristwatch 90 is fixed in the state thatit is interposed between the clip hold members 82, 83. Then, the toolfor wristwatch 40 is applied thereto and a connecting pin is removedfrom a band connecting pin insertion hole of watchband 92 of wristwatch90 as mentioned above manner.

[0259] The use of this hold guide member 81 is not limited to the aboveremoving operation by using the tool for wristwatch 40, and the holdguide member 81 can be used in the push insertion operation by using thetool for wristwatch 40 together with the push pin 52′, and can be alsoused in the removing operation by using the tool for wristwatch 60.

[0260] By using this hold guide member 81 at the time of removingoperation or push insertion operation, the watchband 92 of wristwatch 90can be fixed in the state that it is interposed between members of thehold guide member 81. Therefore, the operation efficiency can bestrikingly enhanced.

[0261] Moreover, with respect to this wristwatch tool set 70, a set ofband connecting pin removing tools 40, 60, removing pin 52, push pin 52′and hold guide member 81 are accommodated in the accommodation recessedparts 76 to 80 of the accommodation member 75 which is fitted in the boxpart 74 of the box main body 71 thereof. Therefore, the wristwatch toolset 70 is convenient for carriage and is also improved in any ofoperations such as removing and push insertion, thereby enhancing thegeneral applicability.

[0262] In this embodiment, a set of band connecting pin removing tools40, 60, removing pin 52, push pin 52′ and hold guide member 81 areaccommodated in the accommodation recessed parts 76 to 80 of theaccommodation member 75 which is fitted in the box part 74 of the boxmain body 71 thereof. However, the component set is not limited to theabove, and can appropriately be changed. For example, the wrench 31 canfurther be accommodated in the wristwatch tool set 70.

1. A tool for wristwatch, employed to remove a band connecting pin, acase back of wristwatch case or the like, said tool comprising: asubstantially cylindrical tool main body including, providedthereinside: a sliding shaft having a front end adapted to permitreplaceable securing of a wristwatch tool component, said sliding shafthaving the front end protruding from the tool main body; and hammeringmeans, said hammering means comprising: a compression spring, and ahammering member adapted to be energized and slide toward the slidingshaft by the compression spring, and a trigger member capableof-releasing spring force of the compression spring when the compressionspring has reached a predetermined compression level, said sliding shaftand said hammering means so arranged that instantaneous large force isapplied to the wristwatch tool component by hammering the rear end ofthe sliding shaft by means of the hammering means.
 2. The tool forwristwatch as claimed in claim 1, wherein the tool main body comprises ahead part tube body, a center tube body threadedly engaged with the headpart tube body, and a tip tube body threadedly engaged with the centertube body, wherein inside of the center tube body, a partition parthaving a hole of small diameter is formed.
 3. The tool for wristwatch asclaimed in claim 2, wherein at the side of the tip tube body of thepartition part, a slant face, which is extending from the hole of smalldiameter to an inside wall of the center tube body is formed.
 4. Thetool for wristwatch as claimed in claim 3, wherein the hammering memberis disposed on the head part tube body side of the partition part, thehammering member being provided with a center hole; and wherein thetrigger member is disposed on the tip tube body side of the partitionpart, the trigger member comprising: a trigger shaft having a part ofsmall diameter and a part of large diameter, the small diameter partadapted to be inserted in the center hole of the hammering member, thelarge diameter part adapted to pass through the small diameter hole ofthe partition part; the large diameter part brought into contact withthe rear end of the sliding shaft, and a deformed coil spring capable ofenergizing the trigger shaft toward the sliding shaft while slanting thetrigger shaft, the the slanted trigger shaft arranged to compress thecompression spring through the hammering member by pressing of the frontend of the sliding shaft, the trigger shaft arranged to stand erect inthe moment that the large diameter part of the trigger shaft is fittedin the small diameter hole.
 5. The tool for wristwatch as claimed in anyof claims 2 to 4, wherein the compression spring is disposed in thecenter tube body and the head part tube body, the spring force of thecompression spring is adjustable by regulating a length of threadedengagement of the center tube body with the head tube body
 6. The toolfor wristwatch as claimed in any of claims 1 to 5, further comprisingpliers having a one-side functioning part and an other-side functioningpart, wherein: a head part of the tool for wristwatch engages with theinside of the one-side functioning part of the pliers, and the tool mainbody or the sliding shaft are arranged so as to pass through a throughhole of the other-side functioning part of the pliers, the tool forwristwatch further comprising a spring capable of energizing the toolmain body toward the one-side functioning part and a jig for fixing awristwatch exterior part arranged outside the other-side functioningpart.
 7. The tool for wristwatch as claimed in any of claims 1 to 6,wherein the securing of the wristwatch tool component to the front endof the sliding shaft is accomplished by at least one of insertion of ashaft in a shaft hole under pressure, screwing of a shaft in a shafthole with setscrew hole, engagement of an external thread with aninternal thread, interlock of a protrudent part with a recessed part andinterlock of a taper shaft with a bearing.
 8. The tool for wristwatch asclaimed in claim 7, wherein at the front end portion of the slidingshaft, an interlock groove for securing the wristwatch tool component isformed, at the center of the wristwatch tool component, a lock hole isformed and inside of the lock hole, a recessed groove is formed, and anO-ring member consisting of en elastic member is fitted in the recessedgroove, the O-ring member arranged so as to be fitted in the interlockgroove of the sliding shaft, thereby enabling detachably securing thewristwatch tool component to the front end portion of the sliding shaft.9. The tool for wristwatch as claimed in any of claims 1 to 8, whereinthe base end portion of the wristwatch tool component is provided withan abutment member consisting of a flexible member.
 10. The tool forwristwatch as claimed in any of claims 1 to 9, wherein a pin or deformedpin for removing a band connecting pin as the wristwatch tool componentis detachably secured.
 11. The tool for wristwatch as claimed in any ofclaims 1 to 10, wherein the pin for removing a band connecting pin isconstituted of a superelastic metallic material consisting of an alloywhich contains nickel/titanium (Ni—Ti) or nickel/titanium/cobalt(Ni—Ti—Co) as a principal component.
 12. The tool for wristwatch asclaimed in any of claims 1 to 11, wherein the pin for removing a bandconnecting pin is a push pin at its front end provided with a recessedpart of cone shape.
 13. The tool for wristwatch as claimed in any ofclaims 1 to 11, wherein the pin for removing a band connecting pin is apush pin at its front end provided with a recessed part consisting of ablind hole adapted to have the connecting pin fitted therein.
 14. Thetool for wristwatch as claimed in any of claims 1 to 9, wherein a wrenchfor removing a bezel or a case back as the wristwatch tool component isdetachably secured.
 15. The tool for wristwatch as claimed in claim 3,wherein the hammering member is disposed on the head part tube body sideof the partition part, the hammering member being provided with a centerhole, and wherein the trigger member comprises: a trigger shaft beingdisposed under the partition part of the center tube body, the triggershaft at its upper end being provided with an abutment surface ofslanted cone shape, the trigger shaft being provided with a verticalthrough hole, an upper part of the sliding shaft, the upper part adaptedto pass through the through hole of the trigger shaft and adapted to befitted in the center hole of the hammering member, and the hammeringmember having its upper end portion formed into substantially a domeconfiguration, the tool for wristwatch is so arranged that the hammeringmember is energized downward by the compression spring, whereby thelower end of the hammering member is abutted to the abutment surface ofslanted cone shape of the upper end of the trigger shaft, resulting thatan axial center of the hammering member is based, the tool forwristwatch is so arranged that the upper part of the sliding shaftraises the hammering member by pressing of the front end of the slidingshaft, whereby the compression spring is compressed by the hammeringmember having been biased toward the inside wall, and the upper endportion of substantially dome configuration of the raised hammeringmember is guided by the inside wall of the through hole of the centertube body, whereby the axial center of the hammering member is movedtoward the center, with the result that the hammering member standserect.
 16. The tool for wristwatch as claimed in claim 15, wherein thehammering member is raised in accordance with rise of the sliding shaftso that a slant face provided on a large diameter part of the lower endportion of the hammering member is guided by the slant face part of thepartition part, whereby the axial center of the hammering member isgradually departed from the inner wall and shifts toward center so thatthe hammering member is thrust upward.
 17. The tool for wristwatch asclaimed in claim 15 or 16, wherein a compression coil spring isinterposed between a lower end of the trigger shaft and the slidingshaft, the tool for wristwatch is so arranged that the trigger shaft isenergized upward by spring force of the compression coil spring, wherebythe abutment surface of slanted cone shape of the upper end of thetrigger shaft is abutted to the large diameter part of the lower endportion of the hammering member, the tool for wristwatch is so arrangedthat the sliding shaft is energized downward by the spring force of thecompression coil spring,, whereby the front end of the sliding shaftprotrudes from the tip tube body.
 18. A tool for wristwatch, employed toremove a connecting pin from a band connecting pin insertion hole ofwatchband, said tool comprising: a substantially cylindrical upper tubebody having an inside threaded part provided on an inside wall of lowerend portion thereof and having an outside threaded part provided on anoutside wall thereof, a removing pin detachably and threadedly engagingthe inside threaded part of the upper tube body, and a substantiallycylindrical lower tube body of taper outline being detachably fitted toa lower portion of the upper tube body by threadedly engaging an insidethreaded part provided on an inner periphery of the lower tube body withthe outside threaded part of the upper tube body, the tool forwristwatch is so arranged that a length of protrusion of a front endportion of the removing pin from to a through hole of front end of thelower tube body can be adjusted by regulating a condition of threadedengagement of the inside threaded part provided on the inner peripheryof upper end portion of the lower tube body with the outside threadedpart of the upper tube body.
 19. A tool for wristwatch, employed toremove a connecting pin in the event that a connecting pin is notcompletely drawn off from a band connecting pin insertion hole ofwatchband, after the connecting pin is removed from the band connectingpin insertion hole by using the tool for wristwatch claimed in any ofclaims 1 to 13, 15 and 17 to 18, said tool comprising: a substantiallycylindrical upper tube body having an inside threaded part provided onan inside wall of lower end portion thereof and having an outsidethreaded part provided on an outside wall thereof, a removing pin beingdetachably and threadedly engaged with the inside threaded part of theupper tube body, and a substantially cylindrical lower tube body oftaper outline being detachably fitted to a lower portion of the uppertube body by threadedly engaging an inside threaded part provided on aninner periphery of the lower tube body with the outside threaded part ofthe upper tube body, the tool for wristwatch is so arranged that alength of protrusion of a front end portion of the removing pin from athrough hole of front end of the lower tube body can be adjusted byregulating a condition of threaded engagement of the inside threadedpart provided on the inner periphery of upper end portion of the lowertube-body with the outside threaded part of the upper tube body.
 20. Thetool for wristwatch as claimed in claim 18 or 19, wherein at the frontend of the lower tube body, an abutment member consisting of a flexiblemember is disposed.
 21. The tool for wristwatch as claimed in any ofclaims 18 to 20, wherein the removing pin is constituted of asuperelastic metallic material consisting of an alloy which containsnickel/titanium (Ni—Ti) or nickel/titanium/cobalt (Ni—Ti—Co) as aprincipal component.
 22. A hold guide member of substantially clipconfiguration, comprising a pair of clip hold members and a connectingpart adapted to couple the clip hold members at base end portionsthereof in curved form to thereby impart elasticity, the hold guidemember so constructed that a watchband can be fixed by interposing thewatchband between the clip hold members.
 23. The hold guide member asclaimed in claim 22, wherein the connecting part is provided with a pincatcher part consisting of a recessed part of through hole configurationadapted to hold a connecting pin so as to prevent dropping of theconnecting pin.
 24. A wristwatch tool set of substantially boxconfiguration, comprising: an underlying box main body, a cover memberopenably secured to one side of the box main body, and an accommodationmember fitted in a box part of the box main body, said accommodationmember on its upper surface side provided with: a recessed part foraccommodation for accommodating the tool for wristwatch claimed in anyof claims 1 to 17, a recessed part for accommodation for accommodatingthe wristwatch tool component defined in any of claims 7 to 14, and arecessed part for accommodation for accommodating the hold guide memberclaimed in claim 22 or
 23. 25. The wristwatch tool set as claimed inclaim 24, wherein the accommodation member on its upper surface side isfurther provided with a recessed part for accommodation foraccommodating the tool for wristwatch claimed in any of claims 18 to 21.